Lithium is the only alkali metal to form nitride.
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Name the gases produced when water reacts with: (a) Aluminium nitride (b) Aluminium carbide.
(a) Ammonia gas is formed (b) Methane is formed
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Name the alkali metal which form superoxide when heated in excess of air.
Potassium. is the alkali metal
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When alkali metal dissolves in liquid ammonia, the solution gives deep blue colour which is conducting in nature .Why?
Due to ammoniated cation and ammoniated electron.
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When an alkali metal dissolves in liquid ammonia the solution can acquire different colours
All alkali metal dissolve in liquid ammonia giving deep blue solutions which are conducting in nature. These solutions contain ammoniated cations and ammoniated electrons as shown below: M + ( x...
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Why are lithium salts commonly hydrated and those of the other alkali metal ions
Lithium is the smallest in size among the alkali metals. Hence, Li+ ion can polarize water molecules more easily than other alkali metals. As a result, water molecules get attached to lithium salts as water of crystallization....
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Sound can travel through (a) gases only (b) solids only (c) liquids only (d) solids, liquids and gases
Correct Answer is: (d) Sound is transmitted by particles (atoms or molecules) in a solid, liquid or gas colliding with each other. It is a wave which is created by vibrating...
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Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
It is easier to obtain metal from its oxide, as compared from its sulphides and carbonates. So prior to reduction, sulphide ores are converted into oxides by roasting and carbonate...
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One mole of magnesium nitride on the reaction with an excess of water gives
(c) : Mg3N2 + 6H2O → 3Mg(OH)2 + 2NH3
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Assertion : Dinitrogen is inert at room temperature. Reason : Dinitrogen directly combines with lithium to form ionic nitrides.
(c) At higher temperatures, dinitrogen combines with metals to form ionic nitrides.
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Two lithium nuclei in a lithium vapour at room temperature do not combine to form a carbon nucleus because
(d) Coulomb repulsion does not allow the nuclei to come very close.
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